IRISHrepublicanARMY's definitions

FRS jammer

usally this:

a device (usally a heavly modified FRS base station radio) that has been set up to jam frequencies in the FRS radio band, used to annoy little kids and to hold a channel for yourself. Some FRS jammers even add music to thier transmissions, which makes it all the more interesting.

"I can't hear anything on channel, that radio op's got his FRS jammer on again"

by IrishRepublicanArmy October 15, 2003

Type 4 Algorithm

Unclassified cryptographic algorithm that has been registered by the National Institute of Standards and Technology, but is not a Federal Information Processing Standard. NTIA

I don't know who used the TYPE FOUR, in fact, I don't even have a HF receiver.

by IrishRepublicanArmy January 24, 2004

MHz

Pronunciated: "Megahertz" not "M.H.Z."

Megahertz means 1000 kilohertz (kHz) and kilohertz means 1000 Hz (cycles per second)

1 MHz = 1000 kHz = 1,000,000 Hz

Wow, sense I listen to DC101, who has a transmitter on 101.1 MHz, thats 101,100 kHz, which is 101,100,000 Hz (cycles per second)

by IrishRepublicanArmy December 21, 2003

Dapper Dan

USAF radio code for command post or any other station that somewhat has command over something. Not used in UHF communications band. It is mostly the VHF tactical communications band (30 to 50 MHz)

Dapper Dan, this is alpha six, we have the enemy engaged.

by IrishRepublicanArmy November 7, 2003

hi hi

radio term

ha ha (laughter)

"hi hi" is the Morse equivalent of a laugh as in Morse it sounds like someone chuckling ("hehhehhehheh hehheh"). That is ditditditdit dit dit --- or dot dot dot dot dot dot. You really have to listen to it sent in Morse to appreciate its laugh like sound. It is most commonly used in CW (Morse Code), but has carried over to voice as well. Many CW expressions have carried over to voice -- such as 73 (Best Regards) and 88 (love and Kisses), etc. The origin probably dates back before radio to the telegraph days. And since Hams used Morse long before voice became practical-- the sound of the Morse characters HI HI was used to resemble a laugh sound. In some sense it is equivalent of a smiley. It's onomatopoeic -- that is the naming of a thing or action by a vocal imitation of the sound associated with it (as buzz, hiss) The definitive answer might be found in the "Dodge's The Telegraph Instructor Manual" circa 1850 to 1900. However, I have never been able to find a copy of this document. Wish I could as it would help to see the transitions from telegraph to radio usage.

hi hi om 73 de w2hht

by IrishRepublicanArmy January 1, 2004

darkstar

also a USAF callsign for Area 51

by IrishRepublicanArmy October 13, 2003

SSB

AM radio transmission in which only one sideband is transmitted.

SSB is a highly efficent modulation mode and is widely used for HF communications.

by IrishRepublicanArmy January 24, 2004